Sanda 6021 double-display luminous waterproof student electronic watch Classic best selling, practical fashion Time between the two places, countdown, alarm clock and the hour, stopwatch timing, week calendar, 12/24-hour system, and a variety of practical functions can be easily set; 50 meters waterproof life, easy to deal with swimming/hand washing and other life scenes; Turn on the luminous mode with one button, and see the cold light effect at night. The light is soft and not dazzling, and you can see the time clearly in the dark environment. Resin strap, light and comfortable, good wear resistance; Double display dial, convenient to watch; Stainless steel bottom cover, daily waterproof, not easy to rust; One of the classic dual-display electronic models, which can be worn by both men and women!